User Guide (Version 2.2) of the
SiRad Simple® Evaluation Kit
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Make sure that both DIP switches are in their OFF positions and the power jumper (J2) for
the WiFi module is open (switched off).
Please proceed to Section 2.1.4 to install the lens
(optional) or to Section 2.2 for running the Evaluation Kit software.
2.1.3 Wireless Data Connection via WiFi (WiFi Mode)
If you want to connect to the sensor via UART instead of WiFi, please skip this section and go back
to Section 2.1.2.
Please be aware that the WiFi module has a limited transfer rate. The
maximal possible frame update rate is about 10 Hz when using the WiFi connection.
The
WiFi interface pins of the sensor board are shown in Figure 4 (left). To run the sensor in WiFi
mode, use the three jumpers delivered with the sensor and close the power jumper (J2) for the WiFi
module (switched on) and connect two jumpers between MT/WR and MR/WT. Apply +5V to the 5V
pin and GND to the any GD pin (there are four) of the external header (J1).
Figure 4: WiFi pinout on J1 (left) and WiFi mode configuration (right)
Please proceed to Section 2.1.4 to install the lens (optional) or to Section 2.2 for running the
Evaluation Kit software.
2.1.4 Mounting the Lens (Optional)
The maximum range of the Evaluation Kit is approximately 40 meters with an opening angle of
/- 30 degrees (-6dB) - for strong targets like a building or car - or +/- 4 degrees with the
lens mounted. If you want to use the lens to increase the maximum range of the system and to
decrease the opening angle, please install the lens at a distance about 10 to 15 mm away from the
radar frontend’s surface, see Figure 5. You can use the provided 10 mm spacers to mount the lens.
With the lens installed, the opening angle of the system decreases like compared in Figure 6.
Figure 5: Mounting the lens
Frontend
d
Lens